I am having some problems with my Arduino Deumilanove. I cannot seen t install on Windows Xp or 7. I have installed it before on XP but i havent used my arduino for a long time ... Most of the time XP does not even acknowledge that something has been plugged in and when it does the wizard does not come up. in Windows 7 it does not even show anything is plugged in..Please help I am A noob At computer and ArduinoSorry for my english(Not my first language)